         (-> (f/parallelize c [1 1 2 3 5 8])
             (f/group-by (f/fn [x] (mod x 2)))
             f/collect
-            vec) => [[0 [2 8]] [1 [1 1 3 5]]])
+            vec) => (just [[0 [2 8]] [1 [1 1 3 5]]] :in-any-order))
 
       (fact
         "group-by-key"

              ]
          (-> (f/join LDATA RDATA)
              f/collect
              vec)) => [["key3" [[5] [33]]]
                        ["key4" [[1] [44]]]
                        ["key1" [[2] [22]]]])

      (fact
        "left-outer-join returns an RDD of (K, (V, W)) when called on RDDs of type (K, V) and (K, W)"

                                      ["key4" [44]]])]
          (-> (f/left-outer-join LDATA RDATA)
              f/collect
              vec)) => (just [["key3" [[5] [33]]]
                              ["key4" [[1] [44]]]
                              ["key5" [[2] nil]]
                              ["key1" [[2] [22]]]
                              ["key2" [[3] nil]]] :in-any-order))

      (fact
        "sample returns a fraction of the RDD, with/without replacement,
